Finding the Fourth Proportional to 935,085,021.12, 1,290,418,840.80 and 517,414,910.40
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Solution
The fourth proportional to 935,085,021.12, 1,290,418,840.80 and 517,414,910.40 is: 714,033,412.80
Step by Step Solution
- Step 1: Write the proportion equation
935,085,021.12 : 1,290,418,840.80 = 517,414,910.40 : x - Step 2: Convert to fraction form
935,085,021.12/1,290,418,840.80 = 517,414,910.40/x - Step 3: Cross multiply
935,085,021.12x = 1,290,418,840.80 × 517,414,910.40 - Step 4: Simplify right side
935,085,021.12x = 667,681,948,891,003,776 - Step 5: Solve for x
x = 667,681,948,891,003,776/935,085,021.12 - Step 6: Final answer
x = 714,033,412.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.